32:
87:, discovered coal balls in England, and the initial research on coal balls was carried out in Europe. It was not until 1922 that coal balls were discovered and identified in
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and geologically, as compared to coal balls from Europe. The oldest known coal balls were found in
Germany and the former
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91:. Since then, coal balls have been discovered in other countries and they have led to the discovery of over 300
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68:, which makes them useful to scientists, who cut and peel the coal balls to research the
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life forms, generally having a round shape. Coal balls were formed roughly
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110:. North American coal balls are relatively widespread, both
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64:. They are exceptional at preserving
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79:In 1855, two English scientists,
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102:Coal balls can be found in
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45:, despite their name, are
106:across North America and
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22:Natural world articles
85:Edward William Binney
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81:Joseph Dalton Hooker
62:Carboniferous Period
131:Paleontology portal
18:Portal:Paleontology
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112:stratigraphically
58:million years ago
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49:-rich masses of
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116:Czechoslovakia
66:organic matter
51:permineralised
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89:North America
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60:, during the
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101:
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72:past of the
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35:A coal ball
104:coal seams
70:geological
42:Coal balls
125:Category
95:and 130
20: |
108:Eurasia
93:species
47:calcium
97:genera
74:Earth
16:<
83:and
56:300
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118:.
99:.
76:.
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